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SIP-level confidentiality protection

a confidentiality protection and IP-level technology, applied in the field of IP-level confidentiality protection, can solve the problems of end-to-end encryption of sip messages, request or response,

Inactive Publication Date: 2003-05-22
NOKIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, section 18.1.1 of RFC2543bis-04 states that the SIP request or response, i.e., SIP messages, cannot be encrypted end-to-end because some of the header fields such as the "To" and "Via" fields need to be visible to proxy servers so that the SIP message can be properly routed.

Method used

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  • SIP-level confidentiality protection
  • SIP-level confidentiality protection
  • SIP-level confidentiality protection

Examples

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Embodiment Construction

[0017] Referring to FIGS. 1 and 2, a user equipment (UE) 10 registers with a network element such as a proxy-Call Session Control Function (P-CSCF) 20 in a visiting network 100 before starting a session. In FIG. 1, the UE 10 is depicted as a mobile phone, however the UE 10 may comprise any user device capable of participating in a session such as a mobile phone, a personal digital assistant (PDA), a portable computer, or a desktop computer. Furthermore, the UE 10 may register with a P-CSCF in a home network of the UE depending on where the UE 10 is located. During registration, the visiting network 100 contacts the home subscriber server (HSS) 30 in the home network 200 of the UE 10 and determines with the UE 10 what algorithms and keys will be used for the registration period. As shown in the timing diagram of FIG. 2, the UE 10 initiates the registration by sending a registration message SM1 to the P-CSCF 20 in the visiting network 100. The home network 200 is then contacted by the...

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Abstract

A session initiation protocol message includes confidentiality protection in that the sender of the message is identified using a temporary identity index generated by calculating a hash function for a private key and public information which indicates the sender. The result of the calculation of the hash function is the temporary identity index and is associated with a specific sender-receiver pair.

Description

[0001] 1. Field of the Invention[0002] The present invention relates to a method and system for confidentiality protection in a session initiation protocol message transmitted between user equipment and network element in a communication network.[0003] 2. Description of the Related Art[0004] Many applications on the Internet such as Internet Protocol (IP) multimedia applications require the creation and management of sessions for exchanging data between participants of the session. Session Initiation Protocol (SIP) is a signaling protocol that has been developed for facilitating the establishment, modification, and termination of IP multimedia sessions such as Internet telephony calls. The specification for SIP are described in an Internet Engineering Task Force (IETF) standard RFC2543 version 04, Jul. 20, 2001, entitled "SIP: Session Initiation Protocol" (RFC2543bis-04). To initiate or establish a session, an SIP message is generated at a user's user equipment (UE) and is sent to t...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L29/08
CPCH04L29/06H04L29/06027H04L63/0414H04L63/0428H04L69/327H04L65/1016H04L65/1006H04L67/14H04L63/08H04L65/1104H04L9/40H04L65/1101
Inventor HAUKKA, TAOPIRTTIMAA, TARJA
Owner NOKIA CORP
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